Paper-reenforcing machine



May 20, 1924. K V

- K. WANDEL I PAPER REENFORCING MACHINE 3 Sheets-Sheet Filed March 6, 1920 May 20, 1924.

-K. WANDEL PAPER REENFORCING MACHINE Filed March 6, 1920 3 Sheets-Sheet 2 v/ V v/vvV/ /V/ /A/////////// //////fl////// f a 22127;???

May 20, 1924. 1,494,970

K. WANDEL.

PAPER REENFOBCING MACHINE Filed March 6, 1920 3 Shets-Shet 5 Patented May ZO, 1 924.

,um'rEo" s'rA'rEs KURT PATENTOEFICE.

WANDEL, or nEw'YonK, n. Y., assrenon T0 INDUSTRIAL EbUNDATION, me,

or BOSTON, MASSACHUSETTS, A'conronATIon oniaassacnusnr'rs.

rArER-nEENroRoIne MACHINE.

Application filed March 6, 1920. SerialNo. 363,713,

To all whom it may concern: Be it known that I KURT \VANDEL, a cit1- ,zen of 'urttelnberg, who have declared my intention of becoming a citizen of the United States, and resident of New York cit county of New York, State of New Yorc, have invented an Improvement in'.Paper- Reenforcing Machines, of which the following description, in connection with .-the ac-v companying drawings, is a specifieatlon, like characters on the drawings representing like parts in each of the several views.

This invention relates to mechanism for applying reenforcing threads or filaments to a continuously moving web of paper or other sheet material in a manner so as to strengthen the web in all directions, but particularly transversely thereof. Various types of apparatus have hitherto been devised for this purpose and designed to lay the reenforcing threads crosswise of the paper web in a more or less diagonal direction, but all these prior types so far as known to me, that have been adapted to lay the threadsat any practicable or commercial speed have involved the use of a rotary to provide thread laying apparatus adapted for co-operation with a moving paper web wherein the thread spools are stationarily mounted, and the only moving instrumentality of the thread laying mechanism is the immediate thread laying means which applies the threads in diagonal crossed relation to the moving paper web and is preferably located closely adjacent to the bite between :1 pair of press rolls which unite the filaments to the paper surface which is usually pregummed or treated with suitable adhesive. As herein shown. the apparatus is associated and combined with a. paper duplexing mechanism and the product-produced is a composite reinforced paper web,

-throughout the length of said plate.

although-in abroaderaspect the invention is not to be understood as limited to this combination. The foregoing and other objects and advantages ofthe invention will more fully appear from the following detailed description, and the distinctive features of novelty will thereafter be pointed v out in the appended claims.

Referring to the drawings:

Fig. 1 is a side elevation showing. apparatus embodying the invention;

-Fig.2 is a plan view. thereof;

'Fig. 3 is a view partly in transverse sec- 1 tion, and partly in elevation withportions broken away showing the immediate thread laying instrumentality;

Fig. 4 is a plan view of the apparatus shown in Fig. 3;

Fig. is a partial elevation on an enlarged scale showing a part of the thread laying means; s

Fig. 6'is a transverse section thereof;

Fig. 7 is a partial plan view of the thread part of the laying means; and,

.showing a part of the track in which the thread laying means moves.

10, 11, indicate a pair of press rolls, around and into the bite of which are led paper webs W, W from paper supply rolls R, R, respectively. One of these webs, as shown, the web W is led through a coating station where suitable adhesive which may be hot asphalt or glue, or other suitable substance, is applied to the. web by a transfer roll 12 from-a tank or pan 13 in which such roll is partly immersed. 14 indicates astand constituting a mounting for a seriesof thread spools S- from which the series of reenforcing filaments F is drawn. A thread guide and alining plate 15 may be mounted on uprights 16 so as tobe at approximately the elevation of the mouth or bite between the rolls 10, 11. This plate is equipped with a series of thread guiding apertures lfi corresponding in .number to 'the number of threads or filaments to be handled and with these apertures equally spaced apart A stand 17 on which the rolls 10, 11, may also be mounted as shown, is equipped with an undercut or T slot 18 extending lengthwise of the rolls and directlyin front thereof, this slot affording means whereby uprights 18, 19, may be adjustably clamped to I so ' .These links are formed with lugs or pro- I said stand by (means of T-headed bolts 20.

These uprights which may thus be spaced apart according to the width of paper webbeing handled, serve as supports for the .ends of a track 21 in which the thread laying deviceis mounted for movement. This track 1s of channel 1ron form with inturned flanges 210 constituting a channel of T-shaped cross section which retains the thread laying device therein throughout its travel. he thread laying instrumentality is of a flexible character capable of following the curved path of the track2l as presently described, and this thread laying means may consist in a chain 22, each link 22 of which may be composed of a plurality of plate members arranged in alternating and over-lapping relation with the corresponding members of thenext link. These over-lapping link portions may be secured together by tubular studs 23 which constitute guides for certainof the threads which are passed'therethrough. The intermediate portion of the links between these pivots may be formed with a series of passages 24 therethrough for other threads, the spacing of these passages with respect to one another and with respect to the passages through the pivot studs 23 being determined by the desired spacing of the filaments to be laid.

' jections 23, 23 at top and bottom thereof which bear pivot pins 25 for rolls 26, 27, which are disposed at each side of each link at top and bottom thereof, these rolls being adapted to engage in the channel of the track-21 resting on the flanges 210 thereof.

The link projections '23; 23, are rounded. and spaced apart. so as to co-operate with a sprocket chain 260 the teeth 260 of which are adapted to lit in between theselink projections. Upper and lower horizontal stretches 21 21 of the track 21 have the intermediate back or outer portion of the track'cut away as indicated at 270 so that the sprocket chain 260 may extendtherethrough to engage the link projections of the thread laying chain. The track 21 is composed of two portions 21 and 21 which I together constitute a flattened figure 8 and as now to be described together make a continuous runway for the thread laying chain.

The trackportion 21 is composed of two flat parallel stretches, 21 already referred to, and 21 between which at one side is a curving semi-circular portion 21; The flat stretch 21 of the track extends alongside of and directly over a'similar flat stretch 21 -ofthe track part 21, and the portions 21",

21?, of the track part 21 are joined at one side by a-semi-circular ortion 21 similar to the portion 21 alrea ym'entioned. 'At.

the'other side of the trackthe portions21,

21', are curved inward towards each other i in portions 21 ,21, the extremities of these inseam portions being relatively displaced laterally and over-lapping by slightly less thanonehalf the width of the thread laying chain, as

indicated at 21', 21'. The extremities of the stretches 21 21 extend to points adjacent the extremities 21, 21", respectively, as in-- dicated'a-t 21", 21. The extremities 21 21 are arranged in the same vertical plane, with the extremity 21 radially inward from the extremity 21f, and the extremities 21, 21"

are likewise in the same vertical plane at' one side of-the extremities 21 21", with the extremity 21 radially inward with respect to the extremity 21. The length of the thread laying chain 22, such that when its advance end 22",-assuming it to be moving in the direction ofthe arrow Fig. 3,- reaches the crossover from the extremity 21 to the extremity 21, the rear end 22- thereof'has passed the crossover 21, 21, in its travel along the stretch 21, and a similar condition exists when the advance end 22 makes the crossover from theextremity 21 to the extremity 21, i. e., at that time the rear end"22 has passed the crossover,21, 21. This is necessary in order that there shall be no interference of the' threads at the crossover, it being understood that there is enough space between the co-operative track extremities 21, 21, and 21, 21, so "that the line of threads may pass therethrough when the rolls of the thread laying chain are transferred from one track extrem-- extremity 21. In this way it will be noted that the filaments which are held' by the thread laying chain portion borne by the track stretch 21* (as seen in Fig. 3) will be drawn diagonally across the moving paper web in one direction, while the filaments that are held by the thread laying chain portion at the track stretch 21 are being drawn diagonally in the opposite direction. Then as the advance end 22 of the thread laying chain progresses along the track stretc-h'21 the threads borne thereby complement and continue; the line" of "threads that leave off with the rear end 22. Thus thread laying chain in its figure 'track, two lines ofdiagonal and intersecting threads willbe supplied to the bite or llO throughout the operative movement of the month between the presser ro1ls-10,-1-1-. j i

Since the described thread laying device is located relatively close to the press-rolls, the successive diagonal threads as they reach the edge portions of the'web are caught by the bite between the rolls'so that as the thread laying chain starts the thread on its return movement it Will be drawn diagonally from one edge of the web to the other alternately. This mechanism' for laying the threads will, it will be observed, cause a partial twisting of the threads between the thread laying chain and the guide plate 15 in each direction, which will however be righted on the next succeeding stretch of the chain movement so that notwisting or tangling of the threads can occur and the proper continuous feed thereof from the stationary spools is insured. In order to insure that the threads on passing the crossovers as described shall 'not catch on the ends of the track sections, these sections may have their edges slightlybeveled as indi cated at a: in Fig. 8. The chain 260 which has been described as engaging the thread laying chain 22 to' operate the same in the outer track stretch 21 is mounted on an idle sprocket wheel 28 journaled in a bearing 29 on the upright'19 and on a driving sprocket wheel 30 journaled'on a bearing 31 borne by the other upright 18. The sprocket wheel 30 is shown as driven by a belt and pulley connection 32 from a suitable driving motor 33. Since this chain 260 can only drive the thread layingchain while a portion thereof is in the track stretch 21, itis requisite (to provide another similar I .chain 34 to engage the thread laying chain 35 at the track stretch 21 thisinsuring the continuous driving of the thread laying chain since some pontion thereof is always in one of the track stretches 21 or 21". The

chain 34 is mounted on a driving sprocket wheel 35 operated by'spur gears 36 from the wheel 30" and in unison therewith, and around afsecond idler sprocket wheel 37 'jonrnaled alongside the sprocket wheel 38.

Fordifferent widths of paper webs the uprights 18,119, may be set at varying distances apart, and .the required number of links added to, or taken from, .the thread laying chain 22 and the driving sprocket chains so as to make the required length thereof, and the track 21 may either have sections inserted or removed, or be replaced by other track portions of different widths according to requirements. The duplex web VV reinforced by the crisscross diagonal filaments laid as described and embedded in the cementitious binder between the plays of the paper, may be led onto a take-on roll R or otherwise taken care of. While I show herein the crossover between the track sections at one side of the figure 8 track, this particular location of the. crossover is merely illustrative and invention is not to be an erstood as limited in this respect. In this as well as other particulars and details the present embodireferred, and the v ment is to be considered as illustrative and not restrictive, reference being had to the appended claims rather than tothe foregoing description to indicate the scope of the invention.

Having described my invention, what I claim as new and desire tosecure by Letters Patent 1s:

1. Apparatus of the kind described, coming threads from such thread supply to- I wards opposite edges of the paper web alternately.

2. Apparatus of the kind desribed, comprising a pair of press rolls having means associated therewith for delivering thereto two paper webs to be duplexed, a relatively stationary source of thread supply, and a continuously moving thread carrier constructed and arranged to deliver the threads continuously to the bite between said rolls in crisscross relation, a

3. Apparatus for-making reinforced paper, comprising means for continuously advancing a paper web'including a press roll,

a relatively stationary source of thread supply, and continuouslymoving means operable in a closed circuitous path mounted adjacent said roll and bearing thethreads from such supply constructed and arranged to deliver the threads upon the paper web transversely thereof. g

4..App-aratus for making reinforced paper, comp-rising means for continuously ad.- vancing a paper web including a press roll, a relatlvely stationary source of thread supply, and means mounted to move in an endloss path for guiding the threads transversely of the paper webv and alternately towards opposite sides thereof.

5. Apparatus for making reinforced paper, comprising means for continuously advancing a: paper web including a press roll, a relatively stationary source of thread supply, and means mounted to move in an endless path equipped with thread guides and constructed and arranged to draw the threads diagonally of the paper web in crisscross relation continuously.

(3. Apparatus for making reinforced paper, comprising paper handling mechanism including a. press roll, a source of thread supply, and flexible thread guiding means constructed and arranged for continuous movement 1n an endless path, parts of which intersect other parts, for continuously layin threads upon the moving paper in diagona transverse i'elationthereto.

I. Apparatusfor making reinforced pa- 1'- com )risin 3a )er advancin means ineluding a press roll, and thread laying .means mounted adjacent said roll and conmeee're tinuous movement in an endless path, portion of which intersect other portions, and

being adapted to draw the thread diagonally 5 of the moving Web alternately towards opposite sides thereof.

8. Apparatus for makin paper, comprising means reinforced pa- 1' advanclng e paper web including ei press 1011, a, stationary source of thread supply,- and a thread carrier mounted adjacent said press roll for movement in an endless path of flattened figure 8 outline.

In testimony whereof, I have signed my name to thisspecification.

KURT WANDEL. 

